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(No Model.) 2 Sheets-Sheet 1..

O. HAGGENMAGHER. APPARATUS FOR PURIFYING 0R SORTING GRITS, 8:0.

Patented Feb. 2, 1892.

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(No Model.) 2 Sheets-Sheet 2. O. HAGGENMAGHER. APPARATUS FOR PURIFYING0R SORTING GRITS 6m. N0. 467,987. Patented Feb. 2-, 1892.-

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llNiTEn STATES PATENT @EETQE.

CARL IIAGGENMACIIER, OF BUDA-PESTH, AUSTRIA-HUNGARY.

APPARATUS FOR PURIFYING OR SORTING GRITS, 84.0.

SPECIFICATION forming part of Letters Patent No. 467,987, dated February2, 1892.

Application filed July 11,1891- Serial No. 399.264. (No model.)

To all whom it may concern.-

Be it known that I, CARL HAGGENMACHER, a director of flour-mills, and acitizen of Switzerland, residing at Buda-Pesth, in the Empire ofAustria-I-lungary, have invented certain new and useful ImprovementsinApparatusfor Purifying or Sorting Grits or Semolina or otherGranularSubstances by Means of a Single Air- Ourrent; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art towhich itappertains to make and use the same.

In the various processes and apparatus heretofore employed for cleansingor purifying grits, semolina, or other granular substances, thesesubstances are generally passed repeatedly through divided currents ofair, in order to effect the sorting or purifying thereof as perfectly aspossible.

According to the present invention, the most perfect sorting orpurifying of such granular substances is obtained by means of a singleair-current, which remains undivided during its entire course, thisbeing effected in such manner that the air'current passing through -theapparatus in an upward direction is made to meet the granular materialdescending by gravity and to raise the separate granules to a greater orless height in proportion to their weight, thereby causing them to fallinto separate receptacles arranged at different heights below and alongthe air-current. By this means the grits or other granular material willbecome sorted in such manner that the lightest granules will becontained in the uppermost receptacles and the heaviest in the lowermostones.

The accompanying drawings show various arrangements of apparatus forcarrying out this method of operating. I will proceed to describe thepractical carrying out of the process with reference thereto.

As the several constructions are similar to each other as regards theessential features, the same parts in each figure are indicated by thesame letters of reference.

Figure 1 shows alongitudinal section of one construction. Fig. 2 shows avertical section of the same, taken on the line A B in Fig. 1;

and Fig. 3 shows a horizontal section taken on the line C D in Fig. 1.The remaining figures show modifications.

The air current or blast to be employed for sorting or purifying is ledin the direction of the arrow through the casing J of the apparatus,provided with a regulating-slide co,either the branch pipe I) for thedischarge being connected to the suction of the fan or blower, or theinlet-opening c d for the air-current being connected to the dischargeof such fan. The grits, which have been previously sorted by screeningaccording to the size of granules, pass through the hopper e onto thedistributing-chut-e f, from which they pass onto the feeding-roller g,and thence through the supply-chute h, provided with a regulating-slidei, into the rising air-current, by which they are raised and sorted. Theheaviest particles fall into the bottom compartments of a register-frame713, while the lighter and lightest particles fall, in proportion totheir weight, into the middle compartments, so that the lighter they arethe higher up they are deposited, and, lastly, the grits offal isdeposited in the uppermost compartments of the frame. From thesecompartments the grits and grits offal descend through the registerframe7.; into the collecting-boxes Z. The different kinds of grits and gritsofial are led off through chutes n n, which are connected to openings inthe partitions m of the receptacles Z. The several partitions formingthe receptacles Z m are capable of being adjusted by sliding them up ordown behind each other, so as to make each compartment of greater orless width. W'hen adjusted, they are secured in position by set-screws7.

Figs. 4., 5, and 6 show a second arrangement of the apparatus. Fig. 4shows alongitudinal section; Fig. 5, a vertical section taken on theline E F in Fig. 4, and Fig. 6 a horizontal section taken on the line GH in Fig. 4. In this arrangement the register-frame 7a is made shorterthan in the arrangement first described, so that at the back of theframe two collecting boxes or hoppers o are situated. The grits offal isconsequently propelled beyond the register-frame into thecollectingboxes 0. A flap p, placed between the latter,

' one side common to each two adjacent recepserves for regulating thequalities in these compartments. The flap s in this arrangement servesfor cutting off the detrimental air-current, in particular in the casewhen the apparatus works with air-pressure.

Fig. 7 shows a longitudinal section to a smaller scale than thepreceding of an arrangement which differs from the preceding ones, inthat the register-frame k is done away with, the vertical walls on ofthe collectingeompartments forming the partitions for the severaldescriptions of grits and grits offal.

In all these constructions the compartments land 0 can be variouslyconstructed otherwise than as shown on the drawings. The register-frame70, although it is advantageous, could also be entirely omitted in thefirst and second arrangements without great disadvantage to the objectaimed at.

What I claim is- 1. In a chop-grader, a series of adjustable receptaclesfor receiving the different grades of material arranged in the form ofsteps,with

tacles, the said side being secured to th e lower of the tworeceptacles, substantially asset forth. l

2. In a chop-grader, a series of diagonallyadjustable receptacles forreceiving the different grades of material arranged in the form ofsteps, the lower end portions of the upper receptacles being adapted tohe slid in contact with the sides of the next adjacent lowerreceptacles, substantially as set forth.

3. In a chop-grader, the combination, with a series of adjustablereceptacles arranged in the form of steps and having one side common toeach two adjacent receptacles and secured to the lower of the tworeceptacles, of a diagonally-arranged frame divided into, compartmentsby horizontal partitions and supported above the said series ofreceptacles,

substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CARL HAGGENMACIIER. lVitnesses:

GEORG- BAUR, J OSEF GINDRIOH.

